SGS Thomson Microelectronics VB125SP Datasheet
HIGH VOLTAGE IGNITION COIL DRIVER
TYPE V
VB125SP 370 V 9 A 200 mA
■ PRIMARY COILVOLTAGE INTERNALLY SET
■ COIL CURRENT LIMIT INTERNALLY SET
■ LOGIC LEVEL COMPATIBLEINPUT
■ BATTERY OPERATION
■ SINGLE FLAG-ON COIL CURRENT
■ TEMPERATURE COMPENSATED HIGH
CL
VOLTAGE CLAMP
DESCRIPTION
The VB125SP is a high voltage power integrated
circuit made using SGS-THOMSON
Microelectronics Vertical Intelligent Power
Technology, with vertical current flow power
darlington and logic level compatible driving
circuit.
The VB125SP can be directly biased by using the
12V battery voltage, thus avoiding to use a low
voltage regulator. It has built-in protection circuits
for coil current limiting and collector voltage
clamping. It issuitable as smart, high voltage, high
current interface in advanced electronic ignition
system.
I
CL
I
CC
VB125SP
POWER IC
TARGET DATA
10
1
PowerSO-10
BLOCK DIAGRAM
C
S
8
HV
TAB
C
INPUT
V
CC
6
9
DRIVER
FLAG
FLAG
(*)
September 1997 1/8
Thisispreliminary information onanew product indevelopmentorundergoing evaluation. Details are subject to change without notice.
Pins 1...5
10
VOLTAGE
REFERENCE
7
GND (Control)
THERMAL
PROTECTION
R
SENSE
*
GND (Power)
1
VB125SP
ABSOLUTE MAXIMUM RATING
Symbol Parameter Value Unit
HV
C
I
C
V
CC
I
CC
I
S
V
IN
P
TOT
V
ESD
V
ESD
T
j
T
STG
THERMAL DATA
R
thj-case
R
thj-amb
CONNECTION DIAGRAM
Collector Voltage (Internally Limited) -0.3V to V
Collector Current (Internally Limited) 10 A
Driving Stage Supply Voltage -0.2 to 40 V
Driving Circuitry Supply Current 400 mA
Logic Circuitry Supply Ccurrent 100 mA
Input Voltage -0.3 to 6 V
Power Dissipation TBD W
ESD Voltage (HVC Pin) -4 to 4 KV
ESD Voltage (Other Pin) -2 to 2 KV
Operating Junction Temperature -40 to 150 °C
Storage Temperature Range -55 to 150 °C
Thermal Resistance Junction - Case MAX 1.2 °C/W
Thermal Resistance Junction - Ambient MAX 62.5 °C/ W
CLAMP
V
V
CC
GND
Cs
INPUT
FLAG
PIN FUNCTION
No Name FUNCTION
1-5 GND Emitter Power Ground
6V
7 GND Control Ground (*)
8C
9 INPUT Logic Input Channel
10 FLAG Diagnostic Output Signal
TAB HVC Primary Coil Output Driver
(*) Pin 6 must be connected to pins 1-5externally
6
10
CC
S
HVC
5
GND
GND
GND
GND
1
Logic Supply Voltage
Logic Level Supply Voltage Filter Capacitor
GND
2/8
1
VB125SP
ELECTRICAL CHARACTERISTICS (V
to
6mH; unless otherwise specified; See Note 1)
= 6 to 24V; -40°C<Tj<125°C; R
bat
= 400 to 700m ; L
coil
Ω
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
CL
V
CE(sat)
I
CC(off)
I
CC(on)
I
CL
V
inH
V
inL
V
IN(hyst.)
I
inH
I
inL
V
diagH
V
diagL
I
diagTH
I
diag
I
diag(leak)
V
F
E
s/b
T
t
d(on)
t
d(off)
t
d(off)
j
High Voltage Clamp IC= 6.5 A; (See Note 2) 340 370 400 V
Saturation Voltage of the Power
Stage
Power Off Supply Current
Power On Supply Current
I
= 5A; Vin= 4V (See Note 3) 2 V
C
=0.4V V
V
in
=0.4V V
V
in
=4V V
V
In
=4V V
V
in
= 14V(Notes 4-5)
bat
=24V
bat
<14V (Note 4-5)
bat
=24V
bat
20
80
220
300
Coil Current Limit Vin= 4 V (See Note 6-7) 8 10 A
High Level Input Voltage 4 V
Low Level Input Voltage 0.8 V
Input Hysteresis Voltage 0.4 V
High Level Input Current Vin= 4 V 10 150
Low Level Input Current Vin= 0.8 V -100
High Level Diagnostic Output
Voltage
Low Level Diagnostic Output
Voltage
Current Threshold Level Diagnostic
R
EXT
(See Note 8)
R
EXT
(See Note 8)
T
j
High Level Flag Output Current IC>I
=22K C
Ω
Ω
=22K C
=25°C (See Note 7and fig. 5) 4.25 4.5 4.75 A
(See Note 7) 0.5 mA
DiagTH
EXT
EXT
=1nF
=1nF
3.5 5.5 V
0.5 V
Leakage Current on Flag Output Vin=LOW 10 µA
Antipallel Diode Forward Voltage IC=-1A 2 V
Single Pulse Avalanche Energy 300 mJ
Thermal Output Current Control IN = ON (See Note 9) 150 °C
Turn-on Delay Time of Output
Current
Turn-off Delay Time of Output
Current
Turn-off Delay Time of Output
Current
(See Note 10) TBD µs
(See Note 11) TBD
(See Note 11) TBD µs
coil
=2
mA
mA
mA
mA
µA
µA
µs
FIGURE 1: Temperature Compensated High
FIGURE 2: Electrical Characteristic of the Circuit
Voltage Clamp Shown in Figure 1
[mA]
I
HVC
nV
Z
R
i1
KV
R
ii
be
R
sens
PWR GND
C
40
30
20
10
100 200 300 400
slope ∝ ∑Ri
nV
Z
V
[V]
V
CL
CE
3/8
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